Naming Container and using the row's data later on.

Question

User842841555 posted

Hello, I've a column of buttons next to a populated gridview. I'm trying to save the row that lines up where the button was clicked, I then want to use some cells in that row to populate a URL that will be executed when the button is clicked. The below is obviously incorrect. Any idea how to properly do this?

Thank you,

protected void ebb_Click(Object sender, EventArgs e)
{
   LinkButton ebb = (LinkButton)sender;
   GridViewRow gvr = (GridViewRow)ebb.NamingContainer;
   Page.ClientScript.RegisterStartupScript(
     GetType(), "OpenWindow", "window.open('https://website.com/query?='+ gvr.rows[0].Cells[0].Text ,'_newtab');", true);
}

Answer 1

User288213138 posted

Hi Mike1986,

I'm trying to save the row that lines up where the button was clicked, I then want to use some cells in that row to populate a URL that will be executed when the button is clicked

gvr.rows[0].Cells[0]

If you want to get the value of a cell in the current GridView, you can try below code:

 protected void apibutton_Click(object sender, EventArgs e)
        {          
            string a=gdvCustomer.Rows[0].Cells[0].Text;
        }

If you want to get the value of the current row, I recommend you do it in the OnRowCommand event.

Here is a demo about how to Get GridView Cell value on Button Click in ASP.Net using C#. https://www.aspsnippets.com/Articles/Get-GridView-Cell-value-on-Button-Click-in-ASPNet-using-C-and-VBNet.aspx

Best regards,

Sam

Answer 2

User-1716253493 posted

You have already in that row, i guess the correct one is gvr.Cells[0].Text 

try this

protected void ebb_Click(Object sender, EventArgs e)
{
   LinkButton ebb = (LinkButton)sender;
   GridViewRow gvr = (GridViewRow)ebb.NamingContainer;
   Page.ClientScript.RegisterStartupScript(
     GetType(), "OpenWindow", "window.open('https://website.com/query?='+ gvr.Cells[0].Text ,'_newtab');", true);
}

Answer 3

User842841555 posted

LinkButton ebb = (LinkButton)sender;
GridViewRow gvr = (GridViewRow)ebb.NamingContainer;
string accession = gvr.Cells[1].Text;
Page.ClientScript.RegisterStartupScript(
this.GetType(), "OpenWindow", "window.open('https://website.com/query=' "+ accession +" ,'_newtab');", true);

Hello,

In the code above the string "accession" appears to be NULL.  Any ideas as to why that would happen?

edit: here is an image of the designer. When search is clicked, I'm trying to store the 2nd cell in a variable to call in the API.

Answer 4

User288213138 posted

Hi Mike1986,

LinkButton ebb = (LinkButton)sender;
GridViewRow gvr = (GridViewRow)ebb.NamingContainer;
string accession = gvr.Cells[1].Text;

This code is fine, please check if the data in the data source is empty.

Best regards,

Sam

Answer 5

User-1716253493 posted

What column 1 is?

For boundfield the code should work.

But for templatefield, use find control to gelt control inside it

Answer 6

User842841555 posted
Yes, they are template field.

Answer 7

User288213138 posted

Hi Mike1989,

Yes, they are template field.

If you are using a template field, I recommend that you get the value of the cell in the RowCommand () event.

<asp:GridView ID="gdvCustomer" runat="server" AutoGenerateColumns="False" OnRowCommand="gdvCustomer_RowCommand">
                <Columns>
                    <asp:TemplateField HeaderText="Id">
                        <ItemTemplate>
                            <asp:Label ID="txtId" runat="server" Text='<%# Eval("Id") %>' />
                        </ItemTemplate>
                    </asp:TemplateField>
       
                    <asp:TemplateField HeaderText="Name">
                        <ItemTemplate>
                            <asp:Label ID="txtName" runat="server" Text='<%# Eval("Name") %>' />
                        </ItemTemplate>
                    </asp:TemplateField>

                    <asp:TemplateField HeaderText="Age">
                        <ItemTemplate>
                            <asp:Label ID="txtAge" runat="server" Text='<%# Eval("Age") %>' />
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Call API" SortExpression="APIcall">
                        <ItemTemplate>
                            <asp:LinkButton ID="apibutton" runat="server" CommandName="Select" CommandArgument="<%# Container.DataItemIndex %>" OnClick="apibutton_Click">Find It</asp:LinkButton>
                        </ItemTemplate>
                    </asp:TemplateField>                
                </Columns>
            </asp:GridView>


 protected void Page_Load(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("Age") });
            dt.Rows.Add(1, "name1", "age1");
            dt.Rows.Add(2, "name2", "age2");
            dt.Rows.Add(3, "name3", "age3");
            gdvCustomer.DataSource = dt;
            gdvCustomer.DataBind();
        }

        protected void apibutton_Click(object sender, EventArgs e)
        {
                      
        }

        protected void gdvCustomer_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "Select")
            {
                int rowIndex = Convert.ToInt32(e.CommandArgument);
                GridViewRow row = gdvCustomer.Rows[rowIndex];
                string name = (row.FindControl("txtName") as Label).Text;

                Response.Write(name);
            }
        }

The result:

Best regards,

Sam

Answer 8

User-1716253493 posted

Mike1986

Yes, they are template field.

Bound the field to label text inside it

Use

Label lbl = (Label)gvr.FindControls("Label1");

then get lbl.Text